FEATURES: Product Weight: (approx.) Mask: 8.1 oz (232 g) Snorkel: 5.0 oz (145 g) Material: Mask: Tempered glass, silicone, polycarbonate Snorkel: PVC, POM, Silicone, Polycarbonate, Specifications: 2-piece set for adults with excellent basic performance Material: Made of good quality silicone which is also used in baby bottles Feature 1: Mask/Equipped with a double skirt for better fit on the face Feature 2: Snorkel/Double guard to block the intrusion of waves from all directions. Drain valve for easy drainage even if water gets into the pipe